 body {
      background-color: #F2F2F2;
    }

    h1 {
      text-align: center;
      margin-top: 50px;
      font-family: Arial, Helvetica, sans-serif;
      color: #333333;
    }

    .form-box {
      background-color: #FFFFFF;
      border-radius: 5px;
      box-shadow: 0px 0px 20px 0px rgba(0, 0, 0, 0.2);
      margin: 0 auto;
      margin-top: 50px;
      width: 400px;
      padding: 20px;
    }

    .form-box form label {
      font-family: Arial, Helvetica, sans-serif;
      color: #333333;
      font-size: 14px;
    }

    .form-box input[type=text],
    .form-box input[type=password] {
      width: 95%;
      padding: 10px;
      border: 1px solid #CCCCCC;
      border-radius: 5px;
      margin-bottom: 20px;
    }

    .form-box input[type=submit] {
      background-color: #4CAF50;
      color: white;
      padding: 10px;
        width: 100px;
      border: none;
      border-radius: 5px;
      cursor: pointer;
    }

    .form-box input[type=submit]:hover {
      background-color: #3e8e41;
    }

    .form-box .error-message {
      color: #ff0000;
      font-family: Arial, Helvetica, sans-serif;
      font-size: 12px;
      margin-bottom: 10px;
    }
.form-box .captcha-box {
      display: flex;
      align-items: center;
      margin-bottom: 20px;
    }

    .form-box .captcha-box img {
      margin-right: 10px;
    }

    .form-box .captcha-box input[type=text] {
      width: 70px;
      padding: 10px;
      border: 1px solid #CCCCCC;
      border-radius: 5px;
      margin-right: 10px;
    }
      a {
	/* 清除a元素的下划线 */
	text-decoration: none;
	color: #000;
}